Brush Research Manufacturing is now offering twisted wire 6 piece tube brush kits. These kits are designed for internal bore , tubing , drilled holes and cylindrical cavity cleaning. Each kit comes with a range of 6 brush sizes: 1/8”-7/16”, 1/2”-1” and 1-1/8”-1-3/4”. Brushes are available in stainless steel, carbon steel, brass, nylon and natural bristle. The ring handle tube brushes are conveniently kept on a carabiner for easy storage and hanging. For more details, download the brochure.